--- zvol.c.orig	2010-03-17 14:52:31.065094619 +0100
+++ zvol.c	2010-03-17 14:52:58.223097941 +0100
@@ -233,10 +233,10 @@
 		if (zv == NULL)
 			continue;
 		if (strcmp(zv->zv_name, name) == 0)
-			break;
+			return (zv);
 	}
 
-	return (zv);
+	return (NULL);
 }
 
 /* extent mapping arg */